Water purification unit



FIG. 1 is a front view of a water purification unit showing the new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image;

FIG. 3 is a rear elevational view thereof;

FIG. 4 top plan view thereof;

FIG. 5 is a bottom plan view thereof, with the broken-line showing of two small clips being for illustrative purposes only and forming no part of the claimed design; and,

FIG. 6 is a top perspective view thereof.

The broken line drawings of a control panel in FIGS. 1, 2 and 5 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a water purification unit, as shown and described. 